Question

classify the triangle using its sides.
7 mm
9 mm
11 mm
scalene
isosceles, but not equilateral
equilateral

Explanation:

Step1: Recall triangle side - classification rules

A scalene triangle has all sides of different lengths. An isosceles triangle has at least two sides of equal length. An equilateral triangle has all three sides of equal length.

Step2: Compare the side lengths

The side lengths are \(7\) mm, \(9\) mm, and \(11\) mm. Since \(7
eq9
eq11\), all sides are of different lengths.

Answer:

scalene